Improvement in machines for trimming the heels and soles of boots and shoes



2 Sh.eets--Sheet I R. c. LAMBART. Machme for Trimming the Heels andSoles ofBoots and Shoes.

' Patented March9,g875.

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- 2 Sheets--'Sheet2. E. LAM B I d Soles of Bnuts Machine for Trim g theHe an and Shoes.

Patgnted March9,1875.

MINHIHINIINIBWW UNITED STATES PATENT firemen.

RICHARD O. LAMBART, OF QUINCY, ASSIGNOR TO FRED S. POTTER, TRUSTEE, OFNEW BEDFORD, MASSACHUSETTS.

IMPROVEMENT IN MACHINES FOR TRIMMING THE HEELS AND SOLES 0F BOOTS ANDSHOES.

Specification forming part of Letters Patent No. 160,529, dated March 9,1875; application filed January 27, 1875.

To all whom it may concern:

Be it known that I, RICHARD G. LAM'BART, of Quincy, in the county ofNorfolk and State of Massachusetts, have invented certain new and usefulImprovements in Machines for Trimming the Heels and Soles of Boots andShoes, of which the following, taken in connection with the accompanyingdrawings, is a specification My present invention relates to the mannerof hanging the guides against which the shoe heel or sole rests whilebeing acted upon by the cutter, and to certain devices for controllingor facilitating the operation of the jack,

and is an improvement upon the invention forwhich Letters Patent No.152,388 were granted to me J une23, 1874.

My invention consists, first, in the use of one or more pairs of gages,attached by their rear ends to stands provided for the purpose,

and arranged to nearly surround the cutter, said stands being so mountedin or on bearings concentric with the axis of the cutterhead that saidgages may vibrate about the cutters without materially changing theirrelation to the periphery of said cutters.

It further consists in mounting the gagestands in or on bearings formedfor the purpose upon levers pivoted to the frame of the machine at apoint coincident with the center of the curve given to the cutters in alongitudinal direction, so that said gages may be adjusted verticallywithout changing their relations to the cutting-edge of the knives, aswill be further described.

My invention further consists in the use, in combination with a'non-revolving last-support or jack, of a pivoted last-pin, arranged tovibrate about an axis in the upper end of the jack, and provided with anelbow-arm, projecting through the side of the jack-head below the axisof said pin, against which bears a spring tending .to hold the last-pinin an inclined position toward the cutters, so that into whateverposition the shoe may be revolved about said last-pin, the upper ortread surface of the heel or sole shall be pressed toward the cutters.

My invention further consists in the use of a forked lever or armpivoted to the frame of the machine in position to embrace the jaclcrod, and carrying a pawl arranged to engage with ratchet teeth formedupon the frame, or a stand secured thereto, for the purpose of holdingthe jack to the right of the cutterhead, while placing a shoe inposition on the jack, against the tension of a spring arranged to movethe jack to the left, as will be described.

It further consists in the combination, with the jack, forked lever,pawl, ratchet-teeth, and spring, of a hand-lever for releasing thepawlfrom the teeth of the ratchet, and a treadle elbow-lever, for moving thejack to the right during the process of trimming the edge 0 the heel orsole.

In the drawings, Figure l is a side eleva tion of a machine embodying myimprovements. Fig. 2 is a front elevation. Fig. 3 is a horizontalsection on line 00 a on Figs. 1 and 2. Fig. 4 is a vertical section online 3 3 on Fig. 2. Fig. 5 is a horizontal section on line 2 2 on Fig.4c; and Fig. 6is ahorizontal section on line o 1), looking upward.

A is a column provided with a broad base, and to the top of which isbolted the frame B, in which is mounted, in a vertical position, thespindle O, to the lower end of which is secured the cutter-head D. Thespindle O is rotated by means of the endless belt E,

which passes around the grooved pulley F, over the idle-pulleys G G, andaround the drivingpulley H, in an obvious manner.

In the cap I of the lower bearing of the spindle O is mounted the rod orbar J, ar ranged to be moved up or down by the screw a, provided withthe hand-wheel b, and mounted in a bearing in the cap K of the upperbearing of the spindle 0.

So far this machine is constructed and arranged substantially like themachine patented to me June 23, 1874.

L is a bifurcated lever, pivoted at c to the frame B, and connected atits movable end to the bar J by means of the pin 11 passing through theslot 6. two parts, bolted together at f, and has formed therein a box orbearing, in which is mounted The lever L is made iif one on either sideof the cutter-head D, and

curved around said head in close proximity to the path of thecutting-edge of the knives, so as to nearly meet in front of thecutters. M is another bifurcated lever or stand, also pivoted to theframe B at 0, and arranged to be adjusted about said pivot by means ofthe thumb-screw N, and provided with the horizontal arm M, extendingunder the lower end of the cutter-head D, and carrying upon its upperside the gage-stand 75, mounted upon the pin t", the axis of which is inline with the axis of the spindle G and cuter-head D, and around whichit is free to vibrate, as circumstances may require.

The pivoted stand i has secured thereto a pair of gages, j j,constructed and applied thereto in substantially the same manner as thegages h h are applied to the carrier 9.

The pin 0, upon which the levers L and M are pivoted, is so located thatits axis coincides with the center from which the curve of the frontside of the cutter is struck, so that into whatever position the gagesmay be adjusted vertically their front ends will always bear the samerelation to the path of the cutting-edges of the knives.

If a cutter is used having less curve in the direction of its length thepin 0 is placed in the hole 0 andif one is used having a quicker curvethe pin 0 is placed in the hole 0 O is a gage-wheel, mounted on theaxial pin it, set in the lever L, in such a position that its inner edgewill rest upon the inner edge of the upper surface of the heel when theshoe is placed in position upon the jack, and the side or edge of theheel is brought to bear against the gages h h and jj.

The jack-rod P, sleeve Q, and jack-head R, resting upon the spring I,are all constructed and arranged substantially as described in myaforesaid patent, and, therefore, form no part of my present invention;but the lastpin m, instead of being attached to the jackhead by aball-and-socket joint, as in said patent, is made in the form of anelbow-lever, and pivoted to the jack-head R by means of the axial pinat, around which it may be made to vibrate within certain limits, and isheld in a position inclined toward the cutter-head D by the spring 0,bearing against the end of its lower or horizontal arm, as shown.

The jack, with the shoe placed thereon, is drawn toward the cutters bythe spring S, one end of which is attached to the jack-rod P, and theother to the column A, as shown.

It will be obvious that the jack-rod P, sleeve Q, and jack-head R arenot to be revolved during the process of trimming a heel or sole, fromthe fact that the attachment of the spring S to the rod P precludes suchrevolution; but the shoe or last is revolved upon the last-pin m, thejack and pin m always maintaining the same relative position, or nearlyso, to the cutters.

T is a projecting stand, cast upon or otherwise secured to the frontside of the column A, the outer edge of which is curved and providedwith the ratchet-teeth p and the projecting lugs q q, to limit themovement of the jack-rod.

U is a forked lever, pivoted to the stand T at r, the forked end ofwhich embraces the jack-rod P, and has pivoted to its under side thepawl .9, arranged to engage with the teeth 11 on the stand T, to holdthe jack in convenient position while the shoe is being placed thereon.

V is a spring, one end of which is attached to the column A, and theother end to the forked lever U, and serves the purpose of moving thejack in one direction, while its movement in the opposite direction isaccomplished by means of the treadle elbow-lever X, the upper end ofwhich rests against the side of the forked lever U.

W is a lever, pivoted at t to the forked lever U, and provided with apin, a, projecting downward through a slot, u, in position to act uponthe pawl s, to disengage it from the ratchet-teeth 10 when the lever Wis moved toward the front of the machine.

The pawl s is held in contact with the edge of the stand T, and made toengage with the teeth 11 by the action of the spring w.

What I claim as new, and desire to secure by Letters Patent of theUnited States, is as follows 1. The gages h h or j j, arranged topartially inclose the cutter-head D, and to vibrate about an axiscoincident, or nearly so, with the axis of the cutter-head,substantially as described. a

2. In combination with a rotary cutter-head and its spindle, the gages hh and gage-carrier 9, provided with an annular journal sur rounding thespindle, and mounted in a bearing concentric, or nearly so, with theaxis of the spindle and cutter-head, substantially as described.

3. The combination of the gages h h, the gage-carrier g, and thebifurcated lever L, pivoted to the frame at a point coincident with theaxis of the longitudinal curve of the front side of the cutters, andsuitable means of adjusting the movable end thereof, sub stantially asdescribed.

4. The combination of the gages jj, the pivoted stand 2', and thebifurcated lever M, provided with the horizontal arm M, and pivoted tothe frame at a point coincident with the axis of the longitudinal curveof the front side of the cutters, and the screw N, for adjusting thesame, substantially as described.

5. The combination, upon the jack of a sole or heel edge trimmingmachine, of a pivoted heel-pin, constructed with a lever-arm, with aspring secured to the vertical standard, and adapted to press againstsaid lever-arm and hold the pin in an inclined position, allsubstantially as and for the purpose described.

6. In combination with the jack-rod P, the forked lever U, pivoted tothe stand T, the pawl s, and ratchet-teeth p, all as and for thepurposes described.

7. The combination of the j aek-rod P, forked lever U, pawl s,ratchet-teeth p, and lever W, provided with the pin u, all arrangedsubstantially as described, for the purposes specified.

8. The combination of the jack-rod P, forked lever U, springs S and V,and the treadle-lever X, all arranged substantially as described.Executed at Boston, Massachusetts, this 22d day of January, 1875.

R. O. LAMBART. Witnesses:

WM. P. EDWARDS, E. A. HEMMENWAY.

